Update README.md

Photo Booth/README.md

@@ -16,12 +16,12 @@ Depending on the input of the pushbutton, it generates sine waves of different f
 
 - This process is repeated until the camera shoot button is pressed 4 times, causing the Photo Booth to take 4 pictures
 
-### [User]
+### _User_
 - When the button is not pressed, it sends a fixed 100 KHz sine wave constantly
 - When a button is pressed, it reads the digital input of the connected Arduino and sends a sine wave of the frequency assigned to each button
 
 
-### [Photo Booth]
+### _Photo Booth_
 - Fourier transform the sine wave signal sent by the user and find the frequency with the largest amplitude 
 - Perform different actions depending on the frequency of transmitted signal 
     * Camera shoot
@@ -31,7 +31,7 @@ Depending on the input of the pushbutton, it generates sine waves of different f
 - After taking four photos, the contrast and light levels of the images will be adjusted
 - Four images are stitched together with the pre-made background, and save it into .png file
 
-<img src="/Photo Booth/images/version1.jpg" width="20%" height="20%" title="flow" alt="flow"></img>
+<img src="/Photo Booth/images/version1.jpg" width="23%" height="23%" title="flow" alt="flow"></img>
 <img src="/Photo Booth/images/version2.jpg" width="20%" height="20%" title="flow" alt="flow"></img>
 <img src="/Photo Booth/images/version3.jpg" width="20%" height="20%" title="flow" alt="flow"></img>